While presenting a clip from the upcoming Disney movie "Maleficent" at the D23 Expo in Anaheim, Calif., the actress revealed that her scary costume as the Sleeping Beauty villainess was very frightening for most children to see.

"These little kids would visit the set, and I would think, 'Oh, I am a Disney character,' so I would go over to them, and say, 'Hi there.' They would just scream," she said via EW.com. "One little kid even said, 'Mommy, please make the mean witch stop talking to me.' "

But Jolie's daughter, Vivienne, who plays a young Princess Aurora in the live-action film, wasn't scared of her mom's costume.

"Vivienne was the only 4-year-old who didn't scream when she saw me!" Jolie laughed.

Making her first solo promotional appearance in Hollywood, the actress -- who underwent a preventative double mastectomy in February -- looked stunning in an all-black ensemble. Speaking to the crowd, she revealed that she was thrilled to portray the evil villainess of "Sleeping Beauty."

"My children love Disney," she shared, per EW.com. "You know you can bring your kids to a Disney film."

"Since I was a little girl, Maleficent was always my favorite," she added. "I was terrified of her, but I was so drawn to her. She had this elegance and grace, and yet she was so cruel. Just wonderfully and deliciously cruel."

In addition to Vivienne and twin brother Knox, Jolie and fiance Brad Pitt are parents to Maddox, 11; Pax, 9; Zahara, 8; and Shiloh, 7. Pax and Zahara also make cameos on the film, which hits theaters July 2, 2014.